Back in May, researchers announced that they had grown an artificial beef patty from stem cells--a project that cost $325,000. The lab grown burger got its first taste test today, and was described by tasters as being "like an animal protein cake." And as it turns out, Google co-founder Sergey Brin paid for the project. This video, produced by the group behind the project, explains its mission and why Brin thinks it's a noble cause.